From: H.J. Lu Date: Wed, 13 May 2015 11:47:59 +0000 (-0700) Subject: Revert "Add -mno-shared to x86 assembler" X-Git-Tag: gdb-7.10-release~525 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e69c76f4bfaf4c1b72f020f811afe03a5f7cd831;p=external%2Fbinutils.git Revert "Add -mno-shared to x86 assembler" This reverts commit 573cc2e57db66165b390044338d3a4ad51f36bf8. --- diff --git a/gas/ChangeLog b/gas/ChangeLog index 7010e64..4877538 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -29,16 +29,6 @@ the symbol name checking code to here from... (md_undefined_symbo): ... here. -2015-05-08 H.J. Lu - - * config/tc-i386.c (no_shared): New. - (OPTION_MNO_SHARED): Likewise. - (elf_symbol_resolved_in_segment_p): Check no_shared. - (md_longopts): Add mno-shared. - (md_parse_option): Handle OPTION_MNO_SHARED. - (md_show_usage): Add -mno-shared. - * doc/c-i386.texi: Document -mno-shared. - 2015-05-07 H.J. Lu * config/tc-i386.c (elf_symbol_resolved_in_segment_p): New. diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index db263ee..75f268f 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -524,11 +524,6 @@ static enum x86_elf_abi x86_elf_abi = I386_ABI; static int use_big_obj = 0; #endif -#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) -/* 1 if not generating code for a shared library. */ -static int no_shared = 0; -#endif - /* 1 for intel syntax, 0 if att syntax. */ static int intel_syntax = 0; @@ -8834,10 +8829,6 @@ elf_symbol_resolved_in_segment_p (symbolS *fr_symbol) /* Symbol may be weak or local. */ return !S_IS_WEAK (fr_symbol); - /* Non-weak symbols won't be preempted. */ - if (no_shared) - return 1; - /* Global symbols with default visibility in a shared library may be preempted by another definition. */ return ELF_ST_VISIBILITY (S_GET_OTHER (fr_symbol)) != STV_DEFAULT; @@ -9537,7 +9528,6 @@ const char *md_shortopts = "qn"; #define OPTION_MBIG_OBJ (OPTION_MD_BASE + 18) #define OPTION_OMIT_LOCK_PREFIX (OPTION_MD_BASE + 19) #define OPTION_MEVEXRCIG (OPTION_MD_BASE + 20) -#define OPTION_MNO_SHARED (OPTION_MD_BASE + 21) struct option md_longopts[] = { @@ -9548,7 +9538,6 @@ struct option md_longopts[] = #endif #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) {"x32", no_argument, NULL, OPTION_X32}, - {"mno-shared", no_argument, NULL, OPTION_MNO_SHARED}, #endif {"divide", no_argument, NULL, OPTION_DIVIDE}, {"march", required_argument, NULL, OPTION_MARCH}, @@ -9609,10 +9598,6 @@ md_parse_option (int c, char *arg) /* -s: On i386 Solaris, this tells the native assembler to use .stab instead of .stab.excl. We always use .stab anyhow. */ break; - - case OPTION_MNO_SHARED: - no_shared = 1; - break; #endif #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \ || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O)) @@ -10042,8 +10027,6 @@ md_show_usage (FILE *stream) -mold-gcc support old (<= 2.8.1) versions of gcc\n")); fprintf (stream, _("\ -madd-bnd-prefix add BND prefix for all valid branches\n")); - fprintf (stream, _("\ - -mno-shared enable branch optimization for non shared code\n")); # if defined (TE_PE) || defined (TE_PEP) fprintf (stream, _("\ -mbig-obj generate big object files\n")); diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi index 47bcbbb..1645c8c 100644 --- a/gas/doc/c-i386.texi +++ b/gas/doc/c-i386.texi @@ -298,16 +298,6 @@ The @code{.att_syntax} and @code{.intel_syntax} directives will take precedent. This option forces the assembler to add BND prefix to all branches, even if such prefix was not explicitly specified in the source code. -@cindex @samp{-mno-shared} option, i386 -@cindex @samp{-mno-shared} option, x86-64 -@item -mno-shared -On ELF target, the assembler normally generates code which can go into a -shared library where non-weak symbols can be preempted. The -@samp{-mno-shared} option tells the assembler to generate code not for -a shared library, where non-weak symbols won't be preempted. The -resulting code is slightly smaller. This option mainly affects the -handling of branch instructions. - @cindex @samp{-mbig-obj} option, x86-64 @item -mbig-obj On x86-64 PE/COFF target this option forces the use of big object file diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog index 9dbd94c..793b329 100644 --- a/gas/testsuite/ChangeLog +++ b/gas/testsuite/ChangeLog @@ -33,12 +33,6 @@ should not generate the warning. * gas/arm/pr18347.l: Update expected output. -2015-05-08 H.J. Lu - - * gas/i386/i386.exp: Run relax-4 and x86-64-relax-3. - * gas/i386/relax-4.d: New file. - * gas/i386/x86-64-relax-3.d: Likewise. - 2015-05-07 H.J. Lu * gas/i386/i386.exp: Run relax-3 and x86-64-relax-2. diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp index c66dbc5..b6f2810 100644 --- a/gas/testsuite/gas/i386/i386.exp +++ b/gas/testsuite/gas/i386/i386.exp @@ -396,7 +396,6 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_32_check]] run_dump_test "note" run_dump_test "relax-3" - run_dump_test "relax-4" if {![istarget "*-*-nacl*"]} then { run_dump_test "iamcu-1" @@ -764,7 +763,6 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t run_list_test "x86-64-size-inval-1" "-al" run_dump_test "x86-64-relax-2" - run_dump_test "x86-64-relax-3" run_dump_test "x86-64-jump" } diff --git a/gas/testsuite/gas/i386/relax-4.d b/gas/testsuite/gas/i386/relax-4.d deleted file mode 100644 index b188841..0000000 --- a/gas/testsuite/gas/i386/relax-4.d +++ /dev/null @@ -1,32 +0,0 @@ -#source: relax-3.s -#as: -mno-shared -#objdump: -dwr - -.*: +file format .* - -Disassembly of section .text: - -0+ : -[ ]*[a-f0-9]+: eb 1c jmp 1e -[ ]*[a-f0-9]+: eb 16 jmp 1a -[ ]*[a-f0-9]+: eb 16 jmp 1c -[ ]*[a-f0-9]+: e9 fc ff ff ff jmp 7 7: (R_386_PC)?(DISP)?32 weak_def -[ ]*[a-f0-9]+: e9 fc ff ff ff jmp c c: (R_386_PC)?(DISP)?32 weak_hidden_undef -[ ]*[a-f0-9]+: e9 fc ff ff ff jmp 11 11: (R_386_PC)?(DISP)?32 weak_hidden_def -[ ]*[a-f0-9]+: e9 fc ff ff ff jmp 16 16: (R_386_PC)?(DISP)?32 hidden_undef - -0+1a : -[ ]*[a-f0-9]+: c3 ret - -0+1b : -[ ]*[a-f0-9]+: c3 ret - -0+1c : -[ ]*[a-f0-9]+: c3 ret - -0+1d : -[ ]*[a-f0-9]+: c3 ret - -0+1e : -[ ]*[a-f0-9]+: c3 ret -#pass diff --git a/gas/testsuite/gas/i386/x86-64-relax-3.d b/gas/testsuite/gas/i386/x86-64-relax-3.d deleted file mode 100644 index d0c7ee4..0000000 --- a/gas/testsuite/gas/i386/x86-64-relax-3.d +++ /dev/null @@ -1,33 +0,0 @@ -#source: relax-3.s -#as: -mno-shared -#objdump: -dwr - -.*: +file format .* - - -Disassembly of section .text: - -0+ : -[ ]*[a-f0-9]+: eb 1c jmp 1e -[ ]*[a-f0-9]+: eb 16 jmp 1a -[ ]*[a-f0-9]+: eb 16 jmp 1c -[ ]*[a-f0-9]+: e9 00 00 00 00 jmpq b 7: R_X86_64_PC32 weak_def-0x4 -[ ]*[a-f0-9]+: e9 00 00 00 00 jmpq 10 c: R_X86_64_PC32 weak_hidden_undef-0x4 -[ ]*[a-f0-9]+: e9 00 00 00 00 jmpq 15 11: R_X86_64_PC32 weak_hidden_def-0x4 -[ ]*[a-f0-9]+: e9 00 00 00 00 jmpq 1a 16: R_X86_64_PC32 hidden_undef-0x4 - -0+1a : -[ ]*[a-f0-9]+: c3 retq - -0+1b : -[ ]*[a-f0-9]+: c3 retq - -0+1c : -[ ]*[a-f0-9]+: c3 retq - -0+1d : -[ ]*[a-f0-9]+: c3 retq - -0+1e : -[ ]*[a-f0-9]+: c3 retq -#pass